Texas Has No Heat Rule, and Your Crew Still Pays for the Heat

Construction was 34% of U.S. fatal heat injuries in 2023, and Texas had the most deaths. The state has no heat rule and the federal one is pending. A plan.

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Blueprint-style illustration of a low-rise jobsite under a large sun drawn as concentric heat lines, with a glowing shade tent and water station connected by an arc.
Plate 10. A jobsite under a heat dome, drawn in isotherms. The shade tent and the water station are the brightest things on the sheet.

The short version

  • Construction accounted for 34.0% of U.S. fatal heat injuries in 2023 while making up about 7% of the workforce, and Texas recorded the most construction heat deaths of any state from 2011 to 2023.
  • Texas has no statewide heat standard, HB 2127 ended the Austin and Dallas rest-break ordinances, and OSHA’s federal heat rule is still a proposal with no final rule listed.
  • OSHA says over 70% of heat-related deaths happen in a worker’s first week, so acclimatizing new and returning workers is the highest-value part of any plan.
  • Heat also costs output and retention: a 2024 meta-analysis found about 60% of exposed construction workers lost productivity, and early quits are most often blamed on expectations and physical demands.

Nobody in Texas is required to give your crew a water break. Their bodies still need one.

That gap, between what the law asks and what a person needs at 3 p.m. in August, is where an employer either builds a heat plan or finds out what going without one costs. Most of the conversation treats heat as a compliance question. It is also a staffing question. A crew that is spent by noon builds less, and a new hire who has a brutal first week may not come back for a second.

How dangerous is heat for construction workers?

The CPWR data bulletin from August 2025 puts it plainly: construction workers are about 7% of the workforce but account for more than one-third of occupational heat-related deaths. In 2023, using Bureau of Labor Statistics fatality data, construction made up 34.0% of fatal heat injuries (18 deaths), more than any other industry. The rate in construction was nearly four times higher than all other industries: 0.15 versus 0.04 per 100,000 full-time equivalent workers.

Share of U.S. fatal heat injuries by industry, 2023Share of all fatal heat injuries recorded by BLS in 2023. Industry was suppressed or missing for more than one in four deaths.
Construction34%
Agriculture, fishing, forestry, and hunting20.8%
Transportation and warehousing9.4%

Source: CPWR, Heat Injuries and Illnesses among Construction Workers, from BLS data

Read those numbers with their limits in mind. CPWR notes that industry was suppressed or missing for more than one in four heat deaths in 2023, and that for construction in 2023 it had to use the primary source to estimate heat injuries because event data was missing. The counts are small, so they swing: construction recorded 11 heat deaths in 2018, 21 in 2020, and 18 in 2023. An older BLS analysis found 144 workers, or 41.9%, who died from environmental heat from 2011 through 2019 while engaged in construction, repair, or cleaning. That is a broader category than the construction industry alone, so do not stack the two figures.

Where does Texas fit?

At the top of the list. Using CPWR’s own Fatality Map, the bulletin counts 25 construction heat deaths in Texas from 2011 to 2023, the most of any state, ahead of California with 13 and Florida with 9. Part of that is size: CPWR points out those three states also have the highest construction employment. Even so, Texas’s rate of 0.16 per 100,000 full-time equivalents is well above California’s and Florida’s at 0.09 each. The bulletin also finds July the deadliest month, and June, July, and August together account for 71.4% of the 126 construction heat deaths in the map. Note that the map is CPWR’s compilation, not a government census, and CPWR cautions that heat illness is widely undercounted.

Does Texas have a heat standard?

No. Inside Climate News reports that Texas, like most states, has no regulations requiring water breaks or other worker heat protections, and that bills to create a statewide standard have failed. Texas also has no OSHA state plan, so federal OSHA applies.

For a few years, two cities filled the gap. Austin and Dallas had ordinances requiring rest breaks within city limits. Then House Bill 2127, signed in June 2023 and effective September 1, 2023, brought state preemption of municipal and county regulation. According to Inside Climate News, it overturned those ordinances and blocked other cities from adopting similar rules.

What remains is federal. OSHA has no heat-specific standard in force, so it relies on the General Duty Clause, which, in OSHA’s words, requires employers to provide a place of employment that “is free from recognized hazards that are causing or likely to cause death or serious harm to employees.” OSHA’s heat page also lists a National Emphasis Program directive dated April 10, 2026. I did not read the directive itself, so check its terms, but it shows enforcement attention to heat has not waited on the rule.

What is the status of the federal heat rule?

Pending. As of today, November 4, 2026, OSHA’s rulemaking page lists no final rule. Here is what it does record:

  • The proposed rule was published in the Federal Register on August 30, 2024.
  • The public comment period closed January 14, 2025.
  • The informal hearing ran June 16 through July 2, 2025.
  • The post-hearing comment period, for those who filed a notice of intention to appear, ended October 30, 2025.

The proposal would apply to all employers conducting outdoor and indoor work, including construction. I could not find an announced date for a final rule, and the page shows no “last updated” date, so check it before you rely on this timeline. Planning around a rule that may or may not arrive is a poor strategy. The hazard is already here.

When do heat deaths actually happen?

Early. Look at what OSHA says about new workers.

The third figure comes from a CDC report on 25 outdoor heat illnesses that OSHA investigated from 2011 to 2016. Of the 14 fatal cases, 11 (78.6%) involved unacclimatized workers, defined as someone who started a new job within two weeks or returned from an absence of more than a week. The authors recommend an acclimatization schedule for new workers and for long-term workers during early-season heat waves. The sample is small, it covers outdoor work in general rather than construction alone, and the authors say they may have misclassified some workers’ acclimatization status.

The practical reading is that your risk is not spread evenly across the season. It concentrates in the first days of a new hire, a rehire, a worker back from vacation, and the first hot week of the year. OSHA’s guidance is the Rule of 20 Percent: new workers do 20 percent of the normal duration on day one and add about 20 percent each day. Some workers may need up to 14 days, and anyone returning after a week or more away needs the same care.

Is heat a productivity and retention problem too?

Yes, and this is the half of the argument that owners tend to skip. A 2024 meta-analysis in BMC Public Health pooled 14 studies covering 2,387 workers and estimated that 60% of construction workers exposed to elevated temperatures experienced significant productivity loss. The loss was more pronounced when the wet bulb globe temperature exceeded 28 degrees Celsius or ambient temperature passed 35 degrees Celsius. That is a pooled estimate across studies, so it describes the research, not your crew. But the direction is not in doubt: a worker fighting the heat is a slower, less careful worker.

Retention is the other cost. In the 2026 AGC and NCCER survey, contractors most often attribute early departures to a mismatch between expectations and the realities of construction work, followed by the physical demands of the job. The survey does not name heat, so treat the link as an inference. But heat is the part of the physical demands a Texas recruit meets first, and it can be described honestly before day one.

Where the law is silent, the jobsite writes the rule, one way or another.

What should a Texas employer’s heat plan include?

Start with the parts OSHA already spells out. Then add the decisions only you can make, such as who has authority to stop work.

Element What to do Basis
Acclimatize Day one at 20 percent of normal hot-work duration, adding about 20 percent per day. Apply the same schedule to workers back after a week or more, and to everyone in the first hot spell of the year. OSHA, Protecting New Workers
Water Provide cool water on site. Encourage frequent drinking, not only when thirsty. Add electrolyte drinks on longer jobs. OSHA, Water. Rest. Shade.
Shade Give people a cool place to take breaks and recover, close enough to the work that they will use it. OSHA, Water. Rest. Shade.
Rest Require breaks when heat stress is high. Write down the trigger so a foreman is not improvising. OSHA, Water. Rest. Shade.
Authority Name who can stop or slow work when conditions turn, and tell the crew who it is. Recommendation, not a cited requirement
Emergency For suspected heat stroke, call 911 immediately, cool the worker with ice or cold water until help arrives, and never leave a worker with a heat-related illness alone. OSHA, Heat-Related Illnesses and First Aid
Honest preview Tell candidates what a July shift is like before they accept. Recommendation, not a cited requirement

Then count what you can. Track heat-related first aid cases, near misses, and how many of them involve workers in their first two weeks. Track no-shows and early quits by start month. If the numbers cluster in the first hot week of summer, you have found your plan’s most important page.

The question that outlasts the rule

Even if OSHA finalizes a heat standard next year, Texas workers will still be standing in the same sun, and the employers who already learned to acclimatize, shade, and speak plainly will be the ones whose crews are still on the roster. So here is the question to take to your next safety meeting: if a new hire collapses on day one, will anyone be able to point to the page that says what you were supposed to do?

If you’re staffing crews for a Texas summer and want people who know what July feels like before they sign, we’d like to hear about the project.

Common questions

Does Texas have a heat standard for construction workers?

No. Texas has no state rule requiring water breaks or other heat protections, and it has no OSHA state plan, so federal OSHA applies. Without a specific standard, OSHA cites heat hazards under the General Duty Clause, which requires workplaces free of recognized hazards likely to cause death or serious harm. Source: ABC South Texas and Inside Climate News.

What did Texas HB 2127 do to local heat rules?

HB 2127, signed June 14, 2023 and effective September 1, 2023, limits city and county regulation through state preemption. Inside Climate News reports that it overturned the Austin and Dallas ordinances that required rest breaks for workers, and it also blocked other cities from passing similar rules. Source: Texas Legislature Online and Inside Climate News.

Has OSHA finalized a federal heat rule?

Not according to OSHA’s rulemaking page, which lists no final rule. The proposal was published August 30, 2024, the informal hearing ran June 16 to July 2, 2025, and the post-hearing comment period for those who filed notices ended October 30, 2025. The page gives no date for a final rule. Source: OSHA.

When are construction workers most likely to die from heat?

Early. OSHA states that almost half of heat-related deaths occur on a worker’s first day on the job and over 70 percent occur during the first week. Its guidance is the Rule of 20 Percent: new workers do 20 percent of normal duration on day one, then add about 20 percent per day. Source: OSHA.

How much does heat reduce construction productivity?

A 2024 meta-analysis of 14 studies covering 2,387 workers estimated that 60% of construction workers exposed to elevated temperatures experienced significant productivity loss, with larger losses above a wet bulb globe temperature of 28 degrees Celsius. It is a pooled estimate, not a measure of any one crew. Source: Han, Dong, and Weng, BMC Public Health.

Sources

  1. Data Bulletin: Heat Injuries and Illnesses among Construction Workers, CPWR, The Center for Construction Research and Training, August 1, 2025.
  2. Heat Injury and Illness Prevention in Outdoor and Indoor Work Settings: Rulemaking, Occupational Safety and Health Administration, accessed November 2026.
  3. Protecting New Workers, Occupational Safety and Health Administration, accessed November 2026.
  4. Evaluation of Occupational Exposure Limits for Heat Stress in Outdoor Workers, United States, 2011 to 2016, Tustin et al., Morbidity and Mortality Weekly Report, CDC, 2018.
  5. Texas Workers Keep Dying in the Heat, Inside Climate News, November 24, 2025.
  6. HB 2127, 88th Legislature, bill history, Texas Legislature Online, accessed November 2026.
  7. Heat Stress in Construction: South Texas Leadership Guide for the 2026 Season, Associated Builders and Contractors, South Texas Chapter, June 4, 2026.
  8. Heat exposure and productivity loss among construction workers: a meta-analysis, Han, Dong, and Weng, BMC Public Health, November 22, 2024.
  9. 2026 Workforce Survey Analysis, Associated General Contractors of America and NCCER, September 2026.
  10. Work-related deaths due to environmental heat exposure in 2019, U.S. Bureau of Labor Statistics, The Economics Daily, 2021.
  11. Water. Rest. Shade., Occupational Safety and Health Administration, accessed November 2026.
  12. Heat Exposure: Heat-Related Illnesses and First Aid, Occupational Safety and Health Administration, accessed November 2026.
  13. Heat Exposure (heat National Emphasis Program listing), Occupational Safety and Health Administration, accessed November 2026.
  14. Heat Exposure: Standards (General Duty Clause), Occupational Safety and Health Administration, accessed November 2026.

This article is general information, not legal, financial, or employment advice. Statistics are as published by their sources on the dates shown.

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